227985491 has 2 divisors, whose sum is σ = 227985492. Its totient is φ = 227985490.

The previous prime is 227985413. The next prime is 227985493. The reversal of 227985491 is 194589722.

227985491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 227985491 - 2¹⁴ = 227969107 is a prime.

It is a super-2 number, since 2×227985491² = 103954768213022162, which contains 22 as substring.

Together with 227985493, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (227985493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113992745 + 113992746.

It is an arithmetic number, because the mean of its divisors is an integer number (113992746).

Almost surely, 2^227985491 is an apocalyptic number.

227985491 is a deficient number, since it is larger than the sum of its proper divisors (1).

227985491 is an equidigital number, since it uses as much as digits as its factorization.

227985491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 362880, while the sum is 47.

The square root of 227985491 is about 15099.1884218987. The cubic root of 227985491 is about 610.8985155070.

The spelling of 227985491 in words is "two hundred twenty-seven million, nine hundred eighty-five thousand, four hundred ninety-one".